A work machine with a mechanical brake touch-up system includes a power source that provides power to a rotational element. The work machine includes a brake that is configured with a piston to selectively engage a frictional element rotationally coupled to the rotational element, a position sensor for generating a position signal of the piston, and a control valve configured to supply hydraulic pressure to the piston to selectively apply a retarding torque to the frictional element, a speed sensor for generating a rotational speed signal. The work machine includes a touch-up controller which is configured to detect a retarding condition of the work machine based on the speed signal, and, upon detection of a retarding condition, control the position of the piston to a touch-up position between an engaged and retracted position.

A brake bleeder apparatus 10 is provided which allows the brakes of an automobile 12 to be bleed by only one person. The apparatus 10 includes an elongated housing 24, having an elongated aperture 26 formed therein. A spring 28 is supported in the aperture 26 in the housing 24. A plunger 44 is aligned in the aperture 26 to engage the spring 28 so that the spring can be compressed and released to expand therein. The apparatus 10 is put in place between a steering wheel 18 and brake pedal 20 of the automobile 12 so the brake pedal is held in place by compression of the spring 28. Once the brake bleeder valve 54 is opened the brake pedal 20 is depressed thereby pushing air out of the brakes of the automobile 12. This process is repeated on each wheel until all the air is removed from the brakes.

A safety system brake system comprises a hydraulic pressure-providing device having a pressure chamber connected to at least one brake circuit by a separating valve and into which pressure chamber a piston is moved to build up pressure. The pressure chamber is a two-stage pressure chamber having first and second sub-chambers. During pressure build-up the piston is moved into the first and then the second sub-chamber. The two sub-chamber are hydraulically closed off from each other when the piston is moved a specified distance into the second sub-chamber. A first check valve is connected to the first sub-chamber on a suction side and to a brake fluid reservoir on a blocking side. A second check valve is connected to the second sub-chamber on a suction side, and to the suction side of the first check valve on the blocking side.

A device and related methods for remotely engaging a brake pedal of a vehicle, and/or engaging the steering wheel of the vehicle to arrest movement thereof, in order to perform a repair or maintenance process on the vehicle. The device allows a single user to remotely control an adjustable support which extends to fit between the steering wheel and brake pedal of the vehicle, with an actuation system operable to depress and release the brake pedal while the user is positioned at a position outside the vehicle to affect maintenance or repair. The device can be used for remotely depressing a brake pedal of a vehicle in order to bleed the hydraulic brake system, check the brake light function, flushing the brake fluid, air brake diagnoses to check for air leaks and function, repair a component of the brake system (e.g., pads, rotors, cylinders, etc.) or suspension system, change or rotate a tire, adjust the alignment, or any other process which involves removing a wheel, or putting the vehicle up on jacks.

A brake pedal actuation device. The brake pedal actuation device includes an elongated body having a first end opposite a second end, wherein the elongated body includes a first portion slidably disposed over a second portion such that the elongated body is movable between a collapsed position and an extended position. A linear distance between the first end and the second end is greater when in the extended position. A handle is removably secured to the first portion via friction fit.

A braking system with a brake pump are described. The brake pump may have a first and a second delivery circuit fluidically connectable to at least a first and a second braking device. The first delivery circuit may have an indirect stage fluidically connectable to the first braking device and a direct stage intercepted by a first control valve, fluidically connectable alternately to a braking simulator and to the at least one second braking device. The second delivery circuit may be intercepted by the first control valve so as to actuate the second braking device alternately to the direct stage of the first delivery circuit.

A method for controlling a force representative of a parking braking of a vehicle, having the steps of: determining, by a data processing unit, a target value of a force representative of a parking braking of the vehicle to be applied, by a first brake caliper, on a first brake disc on the basis of a value of the gradient of the road on which the vehicle is located; determining, by the data processing unit, a value of a first force contribution representative of a service braking of the vehicle applied by a first hydraulic actuator on the first brake disc; determining, by the data processing unit, a value of a second force contribution representative of the parking braking of the vehicle to be applied, by a second electromechanical actuator, on the first brake disc on the basis of a target value of a force representative of a parking braking of the vehicle which can be applied by the first brake caliper on the first brake disc, and of the determined value of the first force contribution representative of a service braking of the vehicle; operating, by the data processing unit, the second electromechanical actuator to apply the determined value of the second force contribution representative of the parking braking of the vehicle on the first brake disc.

A method of manufacturing vehicle brake boosters includes load testing a plurality of reaction discs and sorting the load-tested reaction discs into multiple, separate batches based on the load test results. A first batch of plunger plates is formed to an axial length to correspond with a first of the separate batches of reaction discs. A first batch of the vehicle brake boosters is assembled with a first one of the multiple, separate batches of reaction discs and the first batch of plunger plates to achieve a target jump-in force. A second batch of plunger plates is formed to an axial length to correspond with a second one of the separate batches of reaction discs. A second batch of the vehicle brake boosters is assembled with a second one of the multiple separate batches of reaction discs and the second batch of plunger plates to achieve the target jump-in force.

In a method for controlling a hydraulic braking system, in the event of a failure of a primary brake actuator system, a secondary brake actuator system is activated.

A method for operating a braking system for a vehicle. A braking request signal characterizing a braking request is generated by actuation of a positioning assemblage of an actuation circuit, and a target brake pressure required in an active circuit is ascertained based on the braking request signal. An actual brake pressure in the active circuit is established in accordance with the target brake pressure, using a pressure generation device, by moving a displacer piston of the pressure generation device using an electric motor of the pressure generation device. If the braking request signal is constant over a predetermined time period, a wheel brake actuated by the active circuit is hydraulically decoupled from the pressure generation device by closing an isolation valve that is disposed in a hydraulic path between the pressure generation device and the wheel brake, and the electric motor is shut off.